Psychics are people who are known to possess an uncanny ability that permits them to foresee, sense, and feel things that are not visible or felt by regular people. There are many phrases that are used to explain such ability. One such phrase says that psychics are gifted with extra sensory perception (ESP), which means that they can have the capacity to feel and known things beyond the regular five senses that are provided to all human beings (sight, sound, smell, touch, and taste). ESP is also referred to as the sixth sense sometimes. Another such term is Psi, which implies "mind and the unknown", that is primarily believed to be responsible for the sensations received from paranormal sources. Psychic capability is also a part of the tenets of parapsychology that is a study of paranormal.
Strictly speaking, nearly every human being has some psychic ability though of course, the use of them is more pronounced in a select few. When you consider something like intuition it becomes obvious that there are certain aspects to the mind that are not open to regular patterns of thought that can be associated with real world events. Intuition has no basis in reality; your mind just insists you follow some decision that eventually turns out to be true. This is a very minor, common, and simple example of limited psychic ability, or the power of the mind to reach beyond the physical. Psychics are apparently gifted with minds that can literally talk across long distances without telephones, hear things that are never spoken, and they can through some kind of heightened intuition, see into the future.
Automatic writing is writing that does not involve any conscious thinking on the part of the writer. In other words, the conscious mind of the writer is not dictating what must be written. Psychics also claim to write under the influence of unknown energies. Similarly, channeling is another way in which they can receive messages from paranormal sources.
Clairsentience is feeling awareness for events that may be in the present, past, or future while clairaudience is hearing or perceiving aural signals that are cannot be heard by anyone else. Both are sub-forms of clairvoyance that is a full fledged example of ESP and through which the psychic can perceive events without involving the 5 senses mentioned earlier.
Divination is a psychic ability that allows the psychic to make predictions or prophecies.
The ability to know about an object or another human being through mere physical contact is known as psychometrics. Pyschokinesis is the ability to move objects by thinking alone.
Remote viewing enables psychics to see and describe things and situations without actually, physically seeing them. The events being described could be hundreds of miles away. Telepathy is defined as the ability to talk to other people through mental contact alone as well as reading thoughts of others.
Psychics often begin by relying heavily on intuition and then developing that portion of their mind to increase its awareness of events that are only perceivable through extra sensory perception. This is known as tuning into the universal mind.
There are many test, offline and on the Internet, that anyone can take to test their own psychic abilities.